Dreaming of big waves coming at you is a sign of future problems in life as per dream meaning and interpretation. The dream is asking you to be prepared for a big problem in life. It will be usually related to relationship or money.
Dreaming of big waves coming at you and you are standing still means you will be clueless and will not know what to do with a problem in near future. It also means serious damage to your life due to inaction.
Dreaming of big waves coming at you and you are running means you will make attempts to get out a tough situation. If you show good will power and are ready to take risk then you will achieve success.
Dream of big waves coming at you and you are happy means suicidal tendencies. You will try to destroy things as you are unable to find solution to life problems.